About us

sitea.biz is an independent directory of online calculators. We are not a lender, a broker, a comparison site or an adviser. We publish five free calculators that we built ourselves, we list independent mini projects on their own subdomains, and we write guides explaining how each calculation actually works. That is the whole business.

The calculators are the part people arrive for, so it is worth being precise about how they work. All five run entirely in your browser as JavaScript: the salary you type into the budget planner, the debt in the loan calculator, the weight in the BMI tool and the bill in the split calculator are processed on your device and never sent to us. There is no upload anywhere on this site, no file field, and no server-side version of any calculator. You can confirm that from your browser's own network tab, and we would rather you did than take our word for it.

Every calculator names its formula. Loan repayments use the standard annuity formula and are run month by month rather than averaged. VAT removal divides by 1 plus the rate rather than subtracting a percentage. Calories use Mifflin-St Jeor. We publish the formula because a result you cannot check is a result you should not trust — including ours.

The directory is a separate thing. Each card points at an independent project with one job. Before listing one we check four things: it works without an account, it shows its working, it does not hand the visitor to a lender or advertiser at the moment they get their result, and it works on a phone. Listing is free, there is nothing to buy, we take no commission and there is no exclusivity. We remove listings when a project stops meeting those criteria, which usually means it has turned into a lead form.

Everything is published in twelve languages: English, German, Spanish, French, Hindi, Indonesian, Italian, Dutch, Polish, Portuguese, Swedish and Turkish — every label, every dropdown option, every result sentence and every guide.

What we do not do: we do not sell financial products, we do not pass your details to lenders or brokers, we do not run advertising, and we do not give financial, legal or medical advice. A calculator on this site is a calculator. It does not know your tax position, your credit agreement or your medical history, and for a decision that matters you should check its answer against the rules that actually apply to you.

Questions, corrections, wrong results and listing applications all go to the same address: contactmail.bsam@gmail.com. If a number here is wrong, tell us and we will fix it and say so.